Scott Silva wrote: >> Try Thunderbird with the Calendar plug-in. > > No windows version that I am aware of. > > Hmmm? I run Thunderbird on my Windows all the time. However, I do believe the original poster is looking for something that supports Exchange Server, presumably in Exchange/Outlook native mode. Good luck. That is a proprietary RPC based server-side email system, in that mode its neither POP nor IMAP. Exchange Server can be configured to support POP and/or IMAP users, but then you lose all the groupware 'benefits' of Exchange. .